Apparatus for air-cooling cylinders



F. W. PECK.

I APPARATUS FOR AIR comma CYLINDERS.

APPLICATION FlLED MAR. 53. 1920.

Patented Sept. 6, 1921.

FREDERICK W. PEGK, OF, ROYAL OAK, MICHIGAN.

APPARATUS FOR AIR-COOLING CYLINDERS.

Application filed March 8, 1920. Serial No.

To all whom it may concern Be it known that L'FREDERICK W. PEoK, a citizen of the United States, residing at Royal Oak, county of Oakland, State of Michigan, have invented a certain new and useful Improvement in Apparatus for Alr- Cooling Cylinders, and declare the following to be a full, clear, and exact description of the same, such as will enable others skilled in the art to' which it pertains to make and use the same, reference being had to the accompanying drawings, which form a part of this specification.

My invention relates to cyl1nder cooling or internal combustion en ines and an object of my improvements is to provide "an apparatus for air cooling a cyllnder wh ch shall direct a draft of air agalnst the cyl nder and tubes or radiating parts and distribute it over the surface thereof ata IlIllform temperature. As hitherto constructed the current of air passed over the cylinder has come in contact with a portion of said cylinder at first and become somewhat heated and then passed to another portion of the c linder to cool the latter at the temperature tli at it has acquired by contact with the firstnamed portion of the cylinder.

In my improvement the current ofair 1s distributed over the surface of the cylinders so that it comes contact with the various portions thereof at practically a uniform temperature. 7

In the accompanying drawing:

Figure 1 is an elevation partly broken away of an apparatus embodying my invention and so much of an engine cylinder as is necessary to illustrate its connection therewith.

Fig. 2 is a detail section.

Fig. 3 is a section similar to Fig. 1, showing a modified construction.

Fig. 4 is 'a detailed section on the line IV--IV of Figs. 2 and 3.

Fig. 5 is a detailed perspective view showing my modified form, the'parts being disassembled.

Fig. 6 is a sectional view of the assembled parts of the modification shown in Fig. 5.

Fig. 7 is a sectional plan-view illustrating an arrangement of a modified form of tube.

Fig. 8 is a detail I perspective illustrating the construction of ig. 7.

a is the cylinder; (1 indicates tubular cy- Specification of Letters Patent.

' .lindrical walls ofwhich are annular -Patented Sept. 6, 1921. 364,187.

projections from the outer surface of the cylinder a. These pro ections may be cast integral with the cylinder, as shown in Fig. 2, or th in the wall Fig. 3.

b is a casing inclosing the cylinder a and the pro ectlons or fins of, with a considerable space between its wall and the outer wall of said cylinder and preferably some space between its inner wall and the outer -'walls of the tubular projections a 6 is a passage leading from the casing b. 0 1s a fan in the passageway 6 adapted to draw air from the casing b.

6 are tubular projections extending in ward from the, inner wall of the casing b, then bores opening to the outer air through apertures in the wall of the casing b. The pro ectlons b extend into and are co-axial with the projections a there being some space between the inner end of the tubes or projections 6 the inner end wall of the projections a and between the walls of the proections.

The operation of the above-described device is as follows:

The fan 0 being operated, air is drawn from the casing 6 formed therein so that the atmospheric air rushes in in jets through the projections 6 suchjets impinging against the inner end walls of the casing a and passing outward along the inner walls of such pro ections to remove the heat therefrom as indicated by the arrows in Fig. 2.

Of course the fan a may be reversed and air blown into the casing b to form a plenum instead of a vacuum therein so that the direction of the current of air would be reversed, having the same effect.

course any other formof projections roducingthe sameefi'ect may be employed. or instance, as shown in Figs. 5 and 6 the ordinary circular fin or cooling rib a o: may be employed and a tubular projection, the or are parts of annuli spaced from each other, may be used, the air current then taking the direction indicated by arrows in Fig. 6.

ey may be tubular pieces cast of the cylinder,

as indicated in The air admission tube may take the formand a partial vacuum structed and affording vertical passages w, w, m Fig. 7 to facilitate the vertical passage of the cooling air.

What I claim is:

1. The combination of a cylinder, cylindrical cavities having walls conneotedwith the Walls of said cylinder, a casing inclosing said cylinder and apertures formed through the walls of said casing opposite said cavities and at a distance therefrom and means for projecting a jet of air through said apertures.

2. The combination of a cylinder, cylindrical cavities having walls connectedwith the Walls of said cylinder, a casing inclosing said cylinder, apertures formed through the walls of said casing opposite said cavities, and tubes extending from the wall of said casing, their bores forming a continuation of said apertures'and openin into said cavities.

In testimony whereof, sign this specification. I

FREDERICK W. PECK. 

